SP Performance Cross Drilled Brake Brake Rotors have a design that offers the best
results possible in cooling and venting brake dust and moisture. Unlike our
competition there is no sharp edge on our chamfer. This is accomplished by the
use of an outer radius curve rather than a countersink. With the radius curve,
or "Sinusoid Curve", it virtually eliminates an edge on the surface of the hole.
This smooth surface also makes the rotor more pad friendly by reducing the wear
of the pad caused by the friction scraping against a sharp edge.

SP Performance Sinusoidal Curved Chamfered Hole:
After many years of development we have come up with a drilling and chamfering method that absolutely has no sharp edges.
We drill our rotors with an exclusive sinusoid curved chamfer. This type of chamfer promotes cooling, minimizes stress,
vents moisture and dust while minimizing heat checking and cracking. The smooth design also increases both rotor and pad life.

Electro- plating is performed on our Brake Rotors to provide a brighter finish
which is more appealing to the look of the rotor. When plating a rotor, a
metallurgical bond is formed between the plating and steel, forming an iron rich
alloy with tenacious bond where it will form its own protective oxide layer.
Electro- plating is very effective in combating the corrosion of the rotor.